diff --git a/src/core/libraries/audio/sdl_in.h b/src/core/libraries/audio/sdl_in.h
index b60db7602..e1b2a4682 100644
--- a/src/core/libraries/audio/sdl_in.h
+++ b/src/core/libraries/audio/sdl_in.h
@@ -33,10 +33,10 @@ private:
         uint32_t freq = 0;
         int channels_num = 0;
         int sample_size = 0;
-        uint32_t format;
+        uint32_t format = 0;
         SDL_AudioStream* stream = nullptr;
     };
 
     std::array<AudioInPort, 8> portsIn;
     std::mutex m_mutex;
-};
\ No newline at end of file
+};